Late Permian–Middle Triassic magnetostratigraphy in North China and its implications for terrestrial-marine correlations

Guo, Wenwei; Tong, Jinnan; He, Qi; Hounslow, Mark W.; Song, Huyue; Corso, Jacopo Dal; Wignall, Paul B.; Ramezani, Jahandar; Tian, Li; Chu, Daoliang

doi:10.1016/j.epsl.2022.117519

Cited by 11 publications

(10 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The marine layer thickness gradually decreases from Linyou to Tongchuan, indicating that transgression occurred from west to east (Meng et al., 2019). Palaeogeographic reconstructions also show a connection between the western SOB and seawater, and the western QB and SOB may have been low‐lying regions in which marine deposits formed (Guo et al., 2022). In contrast, the eastern SOB underwent initial northward fluvial progradation, which was characterized by pebbly and medium–fine sandstones with poor gravel sorting and rounding, yielding a proximal provenance derived from the southern margin of the NCB and the QB (Xu & He, 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Most of the basal Triassic strata are considered to be in conformable contact with Permian strata in the SOB; however, the most recent Permo-Triassic Boundary (PTB) magnetostratigraphic framework for the NCB indicates that a hiatus occurred during the PTB. Thus, the bottom of the Induan stage is missing in the Liulin area (Figure 2a; Guo et al, 2022) and indicates a localized absence of lower Triassic strata in the southern SOB. The detailed flora and palynological assemblages of the Zhifang-Wayaobao Fms.…”

Section: Geologic Settingmentioning

confidence: 99%

See 1 more Smart Citation

Triassic temporal and spatial migration of the provenance along the South Ordos Basin: Insights into the tectonic evolution of Eastern Palaeo‐Tethys Ocean

Xu,

He,

et al. 2023

Basin Research

View full text Add to dashboard Cite

Clarifying the role of mountain‐building processes in the filling history of large hinterland basins is an essential aspect of basin–mountain system research. We consider the case of the Triassic South Ordos Basin (SOB) to clarify these points. Located in the south‐western North China Block (NCB), the SOB which preserves the most complete Triassic deposition on the north of the Qinling Orogenic Belt (QB) is crucial for understanding the detailed tectonic processes of the QB. Sedimentological, petrological and zircon U–Pb geochronological signatures from the three parts (eastern, central and western) in the SOB indicate that the sediment source migrated both temporally and spatially. Stratigraphic correlation identified two fluvial progradational episodes from south to north in the fluvial–deltaic–lacustrine sedimentary system, one in the eastern SOB and the other in the central SOB. The Late Triassic detrital zircons in the central SOB with distinguishing Neoproterozoic ages were derived from the southern margin of the NCB and the QB. The western SOB exhibited the sediment source shifted from pre‐Triassic North Qilian Belt sedimentary cover to basement from the Middle‐to‐Late Triassic based on a zircon age transition from ca. 2000 to ca. 430 Ma. Late Triassic sediment sources also included the southern margin of the NCB and the QB. Differing provenances from east to west were also confirmed using thin section and heavy mineral analyses. Regional comparisons of zircon age distributions in the eastern SOB with published data indicate that detritus from the QB was first transported to the eastern SOB and then to the central and western SOB. Spatiotemporal changes in the sediment source and sedimentary filling transitions in the three parts of the SOB suggest that the QB underwent asynchronous uplift that began in the east during the Early Triassic and propagated westward, reaching its maximum extent in the early Late Triassic.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Geologic Settingmentioning

confidence: 99%

Triassic temporal and spatial migration of the provenance along the South Ordos Basin: Insights into the tectonic evolution of Eastern Palaeo‐Tethys Ocean

Xu,

He,

et al. 2023

Basin Research

View full text Add to dashboard Cite

show abstract

“…The age assignment of the Sunjiagou Formation has long been disputed. Previously, this Formation was assigned to either the Late Permian (Cheng et al, 1983; Lin & Fu, 1992; Wang, 1986; Wang, 1997; Yuan et al, 2003; Zhang, 1991), or the Early Triassic (Cao, Fang, et al, 2019; Guo et al, 2022; Li et al, 2003; Liu, 2018; Liu et al, 2014; Liu & He, 2000; Liu & Liu, 1984; Ouyang & Zhang, 1982; Tu et al, 2016; Yin & Lin, 1979; Zhang et al, 1994; Zhao et al, 1980) based on faunal and floral correlations and sequence stratigraphic division. Ouyang and Zhang (1982) established the Lundbladispora‐Aratrisporites‐Taeniaesporite microfloral assemblage from the upper Sunjiagou Formation.…”

Section: Geological and Stratigraphic Settingsmentioning

confidence: 99%

“…More recently, this spore assemblage has been widely treated as the first microfloral zone of the Triassic worldwide (Tewari et al, 2015; Yu et al, 2015). Guo et al (2022) suggested that the Permian–Triassic Boundary is placed within the middle part of the Sunjiagou Formation. Therefore, the Sunjiagou Formation probably ranges in age from the latest Permian to the earliest Triassic (Figure 1c).…”

Section: Geological and Stratigraphic Settingsmentioning

confidence: 99%

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

Zheng

Wan

et al. 2022

Geological Journal

View full text Add to dashboard Cite

Evolution of terrestrial infauna in the Early Triassic enables to understand terrestrial biotic recovery after the end-Permian mass extinction (EPME). Six ichnospecies in two ichnogenera, including Skolithos linearis, S. verticalis, S. annulatus, S. isp., Planolites montanus, and P. beverleyensis, were recognized from the Lower Triassic Liujiagou Formation (Induan Stage) and Heshanggou Formation (Olenekian Stage) in the Baiping section of the Dengfeng area, North China. The ichno-ecological analyses of ichno-taxonomic abundance, ichnodiversity, bioturbation index, burrow size, and tiering level revealed that terrestrial infauna expanded from epibenthic to endobenthic through the Early Triassic. The tiering deepening suggested that tracemakers gradually began to excavate into the sediments instead of moving on the microbial mats, indicating that the burrowing capability of trace-making animals has recovered in the Olenekian. Four types of sedimentary substrates were summarized: non-bioturbated matground, matground with bioturbated patches, weakly bioturbated mixed ground, and moderately bioturbated mixed ground. Occurrence of the substrate of mixed ground may be a sign of the initial recovery of the terrestrial ecosystem after the EPME.

show abstract

“…The Liujiagou Formation contains multilayer conglomerate and thickly‐bedded siltstone in its lower part, great thickly‐bedded medium‐grained sandstone in its middle part, and thickly‐bedded medium‐grained sandstone with thinly‐bedded argillaceous siltstone in its upper part (Figures 2 and 3). Systematic U–Pb dating studies have not been undertaken in the study area, but previous biostratigraphic and magnetostratigraphic studies suggest that the Sunjiagou Formation was formed in the Late Permian and the Liujiagou Formation in the Early Triassic (Guo et al, 2022; Shen et al, 2022; Tu et al, 2016; Xing et al, 2021; Yu et al, 2022).…”

Section: Geological Settingmentioning

confidence: 99%

Geochemistry of the Permian–Triassic boundary strata in the southwest margin of the North China Craton: Provenance and tectonic implications

et al. 2022

View full text Add to dashboard Cite

The Late Permian Sunjiagou Formation and Early Triassic Liujiagou Formation were studied to understand the palaeoclimatic and palaeoenvironmental changes in the southwest margin of the North China Craton across the Permian-Triassic boundary, as well as the tectonic evolution of their provenance sediment. Major, trace, and rare earth elements in 20 clastic rock samples from the strata above and below the boundary were analysed. Overall, the Sunjiagou Formation samples showed an average index of compositional variability (ICV) and chemical index of alteration (CIA) of 1.53 and 73.59, respectively, indicating high-maturity sediments in a warm and humid environment with moderate chemical weathering, whereas Liujiagou Formation samples had an average ICV and CIA of 2.40 and 70.1, respectively, indicating lowmaturity sediments in a cold and dry environment with mild chemical weathering.These strata were composed of first-cycle sediments in a tectonically active area.The provenance of the Sunjiagou Formation was dominated by quartz-rich sedimentary rocks, whereas that of Liujiagou Formation had both quartz-rich sedimentary rocks and intermediate volcanic rocks. The provenance tectonic settings were mainly the continental island arc and active continental margin. Thus, the study area was in a terrestrial, freshwater sedimentary environment from the Late Permian to Early Triassic, and the climate gradually changed from warm and humid to dry and hot, with multiple small-scale periodic evolutions. Taken together, these findings further confirm that the entire study area was in an oxidizing environment and the oxidation degree in the Early Triassic was higher than that in the Late Permian.

show abstract

Late Permian–Middle Triassic magnetostratigraphy in North China and its implications for terrestrial-marine correlations

Cited by 11 publications

References 65 publications

Triassic temporal and spatial migration of the provenance along the South Ordos Basin: Insights into the tectonic evolution of Eastern Palaeo‐Tethys Ocean

Triassic temporal and spatial migration of the provenance along the South Ordos Basin: Insights into the tectonic evolution of Eastern Palaeo‐Tethys Ocean

The variations of terrestrial trace fossils and sedimentary substrates after the end‐Permian extinction in the Dengfeng area, North China

Geochemistry of the Permian–Triassic boundary strata in the southwest margin of the North China Craton: Provenance and tectonic implications

Contact Info

Product

Resources

About